798605 has 4 divisors (see below), whose sum is σ = 958332. Its totient is φ = 638880.

The previous prime is 798599. The next prime is 798613. The reversal of 798605 is 506897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506897 = 23 ⋅22039.

It can be written as a sum of positive squares in 2 ways, for example, as 316969 + 481636 = 563^2 + 694^2 .

It is not a de Polignac number, because 798605 - 2¹⁰ = 797581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79856 + ... + 79865.

It is an arithmetic number, because the mean of its divisors is an integer number (239583).

2⁷⁹⁸⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

798605 is a deficient number, since it is larger than the sum of its proper divisors (159727).

798605 is a wasteful number, since it uses less digits than its factorization.

798605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159726.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 798605 is about 893.6470220395. The cubic root of 798605 is about 92.7777868083. Note that the first 4 decimals are identical.

The spelling of 798605 in words is "seven hundred ninety-eight thousand, six hundred five".